no more submodule

GtkSharp/Source/Libs/GLibSharp/DestroyNotify.cs

@@ -0,0 +1,73 @@
+// GLib.DestroyNotify.cs - internal DestroyNotify helper
+//
+// Author: Mike Kestner <mkestner@novell.com>
+//
+// Copyright (c) 2005 Novell, Inc.
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of version 2 of the Lesser GNU General 
+// Public License as published by the Free Software Foundation.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this program; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA 02111-1307, USA.
+
+namespace GLib {
+
+	using System;
+	using System.Runtime.InteropServices;
+
+	[UnmanagedFunctionPointer (CallingConvention.Cdecl)]
+	public delegate void DestroyNotify (IntPtr data);
+
+	public class DestroyHelper {
+
+		private DestroyHelper () {}
+		
+		static void ReleaseGCHandle (IntPtr data)
+		{
+			if (data == IntPtr.Zero)
+				return;
+			GCHandle gch = (GCHandle) data;
+			gch.Free ();
+		}
+
+		static DestroyNotify release_gchandle;
+
+		public static DestroyNotify NotifyHandler {
+			get {
+				if (release_gchandle == null)
+					release_gchandle = new DestroyNotify (ReleaseGCHandle);
+				return release_gchandle;
+			}
+		}
+
+		static void ReleaseSourceProxy (IntPtr data)
+		{
+			if (data == IntPtr.Zero)
+				return;
+			GCHandle gch = (GCHandle)data;
+			if (gch.Target is SourceProxy proxy) {
+				lock (proxy)
+					proxy.Dispose ();
+			}
+			gch.Free();
+		}
+
+		static DestroyNotify release_sourceproxy;
+
+		public static DestroyNotify SourceProxyNotifyHandler {
+			get {
+				if (release_sourceproxy == null)
+					release_sourceproxy = new DestroyNotify (ReleaseSourceProxy);
+				return release_sourceproxy;
+			}
+		}
+	}
+}